PLANETARY TRANSMISSION (7S4601 N/S)--Part 1 of 4 Serial No. 65M442 to 65M589 inclusive and 79P562, 564, 567 and 79P569 to 79P929 inclusive Part of 2P4361 Transmission Arrangement shown on Page 77B 637

7S-4601: PLANETARY GP

PLANETARY TRANSMISSION (7S4601 N/S)--Part 1 of 4
Serial No. 65M442 to 65M589 inclusive and 79P562, 564, 567 and 79P569 to 79P929 inclusive
Part of 2P4361 Transmission Arrangement shown on Page 77B

Parts for your 637 WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8S-9004	[2]	PISTON
2.	1P-4110	[2]	DISC ASSEM.
3.	2P-4472 R	[1]	PLATE
4.	3S-0034	[1]	PLATE ASSEM.
5.	3S-1284	[1]	RING
6.	1S-7347	[1]	RING
7.	3P-0798	[1]	PISTON
8.	3P-0793	[4]	PLATE
9.	7S-4486	[1]	CARRIER ASSEM.
			(Includes)
	7M-8480	[2]	DOWEL
10.	1A-1460	[20]	BOLT
	2M-0849	[20]	WASHER
11.	7S-2998	[1]	CARRIER ASSEM.
			(Includes)
	2A-3746	[2]	PLUG
12.	7M-5731	[22]	WASHER
13.	2S-4900	[3]	SHAFT ASSEM.
			(Each Includes)
14.	3S-0036	[1]	PLUG
15.	3S-0149	[3]	GEAR (33 teeth)
	5M-5018	[3]	BEARING
16.	3K-1629	[1]	RING
17.	5S-7065	[1]	GEAR (49 teeth)
18.	8S-9085	[1]	GEAR ASSEM. (102 teeth)
			(Includes)
	6B-1985	[5]	RIVET
19.	5M-6178	[1]	WASHER
20.	3P-3561	[3]	DISC ASSEM.
21.	3S-0040 R	[2]	PLATE
22.	1M-3151	[5]	PIN
23.	4S-5804	[1]	RING
24.	3P-0797	[1]	PISTON
25.	8M-6541	[1]	RING
26.	7S-4544	[1]	GEAR (99 teeth)
27.	4M-9592	[25]	SPRING
28.	2S-0044	[5]	PIN
29.	3S-1278	[4]	RING
30.	0S-1588	[12]	BOLT
	5M-2894	[12]	WASHER
31.	3S-1281	[2]	RING
32.	8M-4987	[2]	SEAL
33.	6P-0219 C	[1]	CAGE
34.	1M-4169	[1]	RING
35.	9M-2004	[1]	BEARING
36.	3P-3672	[4]	RING
37.	3S-2658	[1]	MANIFOLD ASSEM.
			(Includes)
	3S-2657	[1]	MANIFOLD
38.	9M-2001	[1]	DOWEL
39.	6P-6240 C	[1]	CARRIER
40.	1S-9958	[1]	BEARING
41.	2D-8426	[9]	STUD
42.	4B-9806 C	[1]	SCREW
43.	3D-2907	[1]	RING
44.	4M-8910	[1]	RING
45.	7S-4498	[3]	GEAR (24 teeth)
	5M-6126	[3]	BEARING
46.	7S-8631	[3]	SHAFT ASSEM.
			(Each Includes)
47.	3S-0036	[1]	PLUG
48.	1D-4719	[9]	NUT
49.	0S-1594	[8]	BOLT
	2S-0607	[4]	LOCK
50.	3S-2708	[19]	PIN
51.	3S-1345	[1]	HOUSING ASSEM.
			(Includes)
	7M-8480	[2]	DOWEL
52.	3P-0796	[1]	PLATE ASSEM.
53.	1M-8652	[1]	RING
	C		INDICATES CHANGE
	R		REMFG PART MAY BE AVAILABLE

7S-4601: PLANETARY GP

PLANETARY GP

PLANETARY TRANSMISSION (7S4601 N/S)--Part 2 of 4
Serial No. 65M442 to 65M589 inclusive and 79P562, 564, 567 and 79P569 to
79P929 inclusive. Part of 2P4361 Transmission Arrangement shown on Page 77B

Parts for your 637 WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7S-8631	[5]	SHAFT ASSEM.
2.	3S-0036	[5]	PLUG
			(1 in each 7S8631 Assem.)
3.	7S-4485	[1]	PLATE ASSEM.
	7M-8480	[4]	DOWEL
			(Part of 7S4485 Assem.)
4.	7S-4498	[5]	GEAR (24 Teeth)
	5M-6126	[5]	BEARING
5.	7S-3057	[1]	HOUSING ASSEM.
	7M-8480	[2]	DOWEL
			(Part of 7S3057 Assem.)
6.	7S-4543	[1]	PISTON
7.	8S-3521	[1]	RING
8.	1A-5964	[2]	BOLT
9.	7S-8969	[8]	GEAR (23 Teeth)
	5M-2051	[16]	BEARING
10.	7M-5783	[16]	WASHER
11.	7S-8577	[4]	SHAFT
12.	7S-8578	[4]	SHAFT
13.	7M-5734	[8]	WASHER
14.	8S-9017	[4]	GEAR (17 Teeth)
	7S-4534	[8]	BEARING
15.	0S-1585	[17]	BOLT
	2M-0849	[17]	WASHER
16.	7S-4495	[1]	GEAR (81 Teeth)
17.	7S-4523	[1]	GEAR (101 Teeth)
18.	8S-3371	[1]	RING
19.	7S-4496	[1]	CAGE ASSEM.
20.	6P-6240 C	[1]	CARRIER
21.	3S-1292	[1]	BEARING
22.	9M-2001	[2]	DOWEL
			(Parts of 7S4496 Assem.)
23.	1P-7509 C	[1]	RING
24.	8S-9184	[1]	GEAR ASSEM. (36 Teeth)
	8S-9183	[1]	HUB
25.	8S-9182	[1]	RING
			(Parts of 8S9025 Assem.)
	C		INDICATES CHANGE

7S-4601: PLANETARY GP

PLANETARY GP

PLANETARY TRANSMISSION (7S4601 N/S)--Part 3 of 4
Serial No. 65M442 to 65M589 inclusive and 79P562, 564, 567 and 79P569 to
79P929 inclusive. Part of 2P4361 Transmission Arrangement shown on Page 77B

Parts for your 637 WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1M-8649	[1]	RING
2.	6H-7201	[1]	RING
3.	3S-2619	[1]	RING
4.	1S-5623	[4]	PLATE
5.	0T-0102	[16]	BOLT
6.	4F-2218	[4]	LOCK
7.	2S-4993	[1]	SLINGER
8.	7S-8971	[1]	GEAR (35 Teeth)
9.	7S-8970	[1]	GEAR (29 Teeth)
10.	5S-7779	[1]	RING
11.	9S-8838	[1]	ADAPTER
12.	8H-3981	[1]	RING
13.	5S-4442	[1]	BEARING
14.	2K-5967	[1]	RING
15.	8S-0005	[1]	CARRIER ASSEM.
16.	7S-8968	[4]	TUBE
17.	3H-9500	[4]	LOCK
18.	6F-0155	[2]	RING
19.	7S-4497	[1]	GEAR (55 Teeth)
20.	9M-6193	[60]	SPRING ASSEM.
21.	0S-1594	[12]	BOLT
	3S-2666	[6]	LOCK
22.	9M-2004	[2]	BEARING
23.	1M-8652	[2]	RING
24.	7S-8646	[1]	SHAFT ASSEM.
	5M-8651	[1]	BEARING
25.	5S-4441	[1]	DOWEL
			(Parts of 7S8646 Assem.)
26.	3S-9975	[1]	PISTON
27.	4S-8694	[3]	DISC ASSEM.
28.	1K-8953	[2]	PLATE
	8S-9057	[1]	NAMEPLATE
	7B-3028	[2]	SCREW
			(Not Shown)

7S-4601: PLANETARY GP

PLANETARY GP

PLANETARY TRANSMISSION (7S4601 N/S)--Part 4 of 4
Serial No. 65M442 to 65M589 inclusive and 79P562, 564, 567 and 79P569 to
79P929 inclusive. Part of 2P4361 Transmission Arrangement shown on Page 77B

Parts for your 637 WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8M-1112	[1]	SEAL
2.	4S-5811	[1]	PLUG
3.	4S-5814	[1]	HOUSING ASSEM.
	7M-8480	[2]	DOWEL
			(Part of 4S5814 Assem.)
4.	6P-1037 C	[1]	RING
5.	3P-4269 C	[1]	PISTON
6.	4S-5805	[1]	RING
7.	5B-1952	[5]	SPRING
8.	3P-4270 C	[5]	PLATE
9.	0L-2070	[8]	BOLT
	5M-2894	[8]	WASHER
10.	7S-8580	[1]	CARRIER
11.	8S-9067	[1]	HOUSING ASSEM.
	7M-8480	[2]	DOWEL
			(Part of 8S9067 Assem.)
12.	8S-9005	[1]	PISTON
13.	1S-9496	[1]	RING
14.	1P-4110	[12]	DISC ASSEM.
15.	2P-4472 RC	[9]	PLATE
16.	4M-9641	[16]	BOLT
	2M-0849	[16]	WASHER
17.	7S-8594	[1]	HOUSING
18.	7S-8972	[1]	GEAR (81 Teeth)
19.	4M-1677	[5]	PIN
20.	1M-9691	[20]	SPRING
21.	9H-5546	[5]	PIN
22.	4S-8724	[3]	DISC ASSEM.
23.	3S-0044 R	[2]	PLATE
24.	3S-1283	[1]	RING
25.	3S-1282	[2]	RING
26.	7S-4502	[1]	MANIFOLD ASSEM.
27.	8B-1312	[2]	DOWEL
			(Part of 7S4502 Assem.)
28.	3P-4265 C	[1]	PISTON
29.	4M-8871	[10]	PIN
30.	0T-0573	[7]	BOLT
	5M-2894	[7]	WASHER
31.	7S-4505	[1]	HOUSING ASSEM.
	7M-8480	[2]	DOWEL
			(Part of 7S4505 Assem.)
	C		INDICATES CHANGE
	R		REMFG PART MAY BE AVAILABLE

7S-4601: PLANETARY GP

PLANETARY GP

7S4601 PLANETARY TRANSMISSION GROUP--Part 1 of 4
Serial No. 65M590-Up and 79P930-Up
Part of 2P4361 and 7G2865 Transmission Arrangements shown on Pages 77B and 77D

Parts for your 637 WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8S-9004	[2]	PISTON
2.	1P-4110	[2]	DISC ASSEM.
3.	9S-8789 RC	[1]	PLATE
4.	3S-0034	[1]	PLATE ASSEM.
5.	3S-1284	[1]	RING
6.	1S-7347	[1]	RING
7.	3P-0798	[1]	PISTON
8.	3P-0793	[4]	PLATE
9.	7S-4486	[1]	CARRIER ASSEM.
			(Includes)
	7M-8480	[2]	DOWEL
10.	1A-1460	[20]	BOLT
	2M-0849	[20]	WASHER
11.	7S-2998	[1]	CARRIER ASSEM.
12.	7G-0894 C	[22]	WASHER
13.	2S-4900	[3]	SHAFT ASSEM.
			(Each Includes)
14.	3S-0036	[1]	PLUG
15.	3S-0149	[3]	GEAR (33 teeth)
	5M-5018	[3]	BEARING
16.	3K-1629	[1]	RING
17.	5S-7065	[1]	GEAR (49 teeth)
18.	8S-9085	[1]	GEAR ASSEM. (102 teeth)
			(Includes)
	6B-1985	[5]	RIVET
19.	8P-1958	[1]	WASHER
20.	9P-4251 C	[3]	DISC ASSEM.
21.	3S-0040 R	[2]	PLATE
22.	1M-3151	[5]	PIN
23.	4S-5804	[1]	RING
24.	3P-0797	[1]	PISTON
25.	8M-6541	[1]	RING
26.	7S-4544	[1]	GEAR (99 teeth)
27.	4M-9592	[25]	SPRING
28.	2S-0044	[5]	PIN
29.	3S-1278	[4]	RING
30.	0S-1588	[11]	BOLT
	5M-2894	[11]	WASHER
31.	3S-1281	[2]	RING
32.	8M-4987	[2]	SEAL
33.	6P-0219	[1]	CAGE
34.	1M-4169	[1]	RING
35.	5P-6230 C	[1]	BEARING
36.	3P-3672	[4]	RING
37.	6P-7707	[1]	MANIFOLD ASSEM.
			(Includes)
	3S-2657	[1]	MANIFOLD
38.	9M-2001	[1]	DOWEL
39.	6P-7706	[1]	CARRIER
40.	1S-9958	[1]	BEARING
41.	2D-8426	[9]	STUD
42.	6B-6863	[1]	PIN
43.	3D-2907	[1]	RING
44.	4M-8910	[1]	RING
45.	7S-4498	[3]	GEAR (24 teeth)
	5M-6126	[3]	BEARING
46.	7S-8631	[3]	SHAFT ASSEM.
			(Each Includes)
47.	3S-0036	[1]	PLUG
48.	1D-4719	[9]	NUT
49.	0S-1594	[8]	BOLT
	2S-0607	[4]	LOCK
50.	3S-2708	[19]	PIN
51.	3S-1345	[1]	HOUSING ASSEM.
			(Includes)
	7M-8480	[2]	DOWEL
52.	1M-8652	[1]	RING
53.	3P-0796	[1]	PLATE ASSEM.
54.	1M-8652	[1]	RING
	C		INDICATES CHANGE
	R		REMFG PART MAY BE AVAILABLE

7S-4601: PLANETARY GP

PLANETARY GP

7S4601 PLANETARY TRANSMISSION GROUP--Part 2 of 4
Serial No. 65M590-Up and 79P930-Up
Part of 2P4361 and 7G2865 Transmission Arrangements shown on Pages 77B and 77D

Parts for your 637 WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7S-8631	[5]	SHAFT ASSEM.
			(Includes)
2.	3S-0036	[1]	PLUG
3.	7S-4485	[1]	PLATE ASSEM.
			(Includes)
	7M-8480	[4]	DOWEL
4.	7G-2516 C	[5]	GEAR (24 teeth)
	5M-6126	[5]	BEARING
5.	7S-3057	[1]	HOUSING ASSEM.
			(Includes)
	7M-8480	[2]	DOWEL
6.	7S-4543	[1]	PISTON
7.	8S-3521	[1]	RING
8.	1A-5964	[2]	BOLT
9.	7G-2526 C	[8]	GEAR (23 teeth)
	5M-2051	[16]	BEARING
10.	7G-0896 C	[16]	WASHER
11.	7S-8577	[4]	SHAFT
12.	7S-8578	[4]	SHAFT
13.	7G-0892 C	[8]	WASHER
14.	C	[4]	GEAR (17 teeth)
	7S-4534	[8]	BEARING
15.	0S-1585	[17]	BOLT
	3H-7654 C	[17]	WASHER
16.	7S-4495	[1]	GEAR (81 teeth)
17.	7S-4523	[1]	GEAR (101 teeth)
18.	8S-3371	[1]	RING
19.	6P-7709	[1]	CAGE ASSEM.
			(Includes)
20.	6P-7706	[1]	CARRIER
21.	3S-1292	[1]	BEARING
22.	9M-2001	[2]	DOWEL
23.	6B-6863	[1]	PIN
24.	8S-9184	[1]	GEAR ASSEM. (36 teeth)
			(Includes)
	8S-9183	[1]	HUB
25.	8S-9182	[1]	RING
26.	8P-6949 C	[1]	PLATE
	C		INDICATES CHANGE

7S-4601: PLANETARY GP

PLANETARY GP

7S4601 PLANETARY TRANSMISSION GROUP--Part 3 of 4
Serial No. 65M590-Up and 79P930-Up
Part of 2P4361 and 7G2865 Transmission Arrangements shown on Pages 77B and 77D

Parts for your 637 WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1M-8649	[1]	RING
2.	6H-7201	[1]	RING
3.	3S-2619	[1]	RING
4.	1S-5623	[4]	PLATE
5.	0T-0102	[16]	BOLT
6.	4F-2218	[4]	LOCK
7.	2S-4993	[1]	SLINGER
8.	7S-8971	[1]	GEAR (35 teeth)
9.	7S-8970	[1]	GEAR (29 teeth)
10.	5S-7779	[1]	RING
11.	9S-8838	[1]	ADAPTER
12.	8H-3981	[1]	RING
13.	5S-4442	[1]	BEARING
14.	2K-5967	[1]	RING
15.	8S-0005	[1]	CARRIER ASSEM.
16.	7S-8968	[4]	TUBE
17.	3H-9500	[4]	LOCK
18.	6F-0155	[2]	RING
19.	7S-4497	[1]	GEAR (55 teeth)
20.	9M-6193	[60]	SPRING ASSEM.
21.	0S-1594	[12]	BOLT
	3S-2666	[6]	LOCK
22.	9M-2004	[2]	BEARING
23.	1K-8953	[2]	PLATE
24.	8P-2401 C	[1]	SHAFT ASSEM.
			(Includes)
	5M-8651	[1]	BEARING
25.	5S-4441	[1]	DOWEL
26.	3S-9975	[1]	PISTON
27.	9P-4254 C	[3]	DISC ASSEM.
	6V-1720 CH	[1]	NAMEPLATE
	7B-3028	[2]	SCREW
	C		INDICATES CHANGE
	H		NOT SHOWN

7S-4601: PLANETARY GP

PLANETARY GP

7S4601 PLANETARY TRANSMISSION GROUP--Part 4 of 4
Serial No. 65M590-Up and 79P930-Up
Part of 2P4361 and 7G2865 Transmission Arrangements shown on Pages 77B and 77D

Parts for your 637 WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8M-1112	[1]	SEAL
2.	4S-5811	[1]	PLUG
3.	4S-5814	[1]	HOUSING ASSEM.
			(Includes)
	7M-8480	[2]	DOWEL
4.	6P-1037	[1]	RING
5.	3P-4269	[1]	PISTON
6.	4S-5805	[1]	RING
7.	5B-1952	[5]	SPRING
8.	3P-4270	[5]	PLATE
9.	0L-2070	[8]	BOLT
	5M-2894	[8]	WASHER
10.	7S-8580	[1]	CARRIER
11.	8S-9067	[1]	HOUSING ASSEM.
			(Includes)
	7M-8480	[2]	DOWEL
12.	8P-4520 C	[1]	PISTON
13.	1S-9496	[1]	RING
14.	1P-4110	[12]	DISC ASSEM.
15.	2P-4472 R	[9]	PLATE
16.	4M-9641	[16]	BOLT
	2M-0849	[16]	WASHER
17.	7S-8594	[1]	HOUSING
18.	7S-8972	[1]	GEAR (81 teeth)
19.	4M-1677	[5]	PIN
20.	1M-9691	[20]	SPRING
21.	9H-5546	[5]	PIN
22.	4S-8724	[3]	DISC ASSEM.
23.	3S-0044 R	[2]	PLATE
24.	3S-1283	[1]	RING
25.	3S-1282	[2]	RING
26.	9G-0599 C	[1]	MANIFOLD ASSEM.
			(Includes)
27.	8B-1312	[2]	DOWEL
28.	3P-4265	[1]	PISTON
29.	4M-8871	[10]	PIN
30.	0T-0573	[7]	BOLT
	5M-2894	[7]	WASHER
31.	7S-4505	[1]	HOUSING ASSEM.
			(Includes)
	7M-8480	[2]	DOWEL
	C		INDICATES CHANGE
	R		REMFG PART MAY BE AVAILABLE

6D-8761: TRANSMISSION CONTROL

TRANSMISSION CONTROL

TRANSMISSION CONTROL (6D8761 N/S)--As Viewed from Right Hand Side of Machine--Part 1 of 2
Serial No. 65M1 to 65M255 inclusive and 79P1 to 79P217 inclusive

Parts for your 637 WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	6D-2594	[1]	GUARD
3.	6F-6977	[1]	WASHER
4.	7D-4769	[1]	GUARD ASSEM.
5.	0L-1351	[1]	BOLT
6.	3B-4610	[1]	COTTER PIN
7.	1A-8912	[1]	WASHER
8.	5F-7464	[1]	SPRING
9.	4D-0587	[1]	PIN
10.	5D-6379	[1]	PLATE ASSEM.
11.	6D-7975	[1]	HOUSING ASSEM.
			(Includes)
12.	3D-5702	[1]	BEARING
13.	4D-0506	[1]	HANDLE
	5B-8407	[1]	PIN
14.	0S-1588	[4]	BOLT
15.	3B-4506	[5]	LOCKWASHER
16.	6D-8688	[1]	PLATE ASSEM.
17.	0S-1595	[2]	BOLT
	3B-4508	[2]	LOCKWASHER
	7D-2956	[1]	SPACER

6D-8761: TRANSMISSION CONTROL

TRANSMISSION CONTROL

TRANSMISSION CONTROL (6D8761 N/S)--As Viewed from Right Hand Side of Machine--Part 2 of 2
Serial No. 65M1 to 65M255 inclusive and 79P1 to 79P217 inclusive

Parts for your 637 WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0S-1571	[1]	BOLT
	1D-4717	[1]	NUT
2.	4B-4283	[3]	WASHER
3.	1B-8706	[1]	KEY
4.	6D-8461	[1]	LEVER
5.	0S-1587	[1]	BOLT
	1D-4719	[1]	NUT
6.	3B-4508	[9]	LOCKWASHER
7.	6D-8708	[1]	ROD ASSEM.
			(Includes)
	6D-8696	[1]	ROD
8.	1B-4430	[2]	NUT
9.	4D-4065	[2]	END
10.	5B-0986	[1]	SCREW
11.	1B-2578	[1]	NUT
12.	3B-4628	[1]	COTTER PIN
13.	5D-6365	[1]	LEVER ASSEM.
			(Includes)
14.	3D-8824	[2]	BEARING
15.	3D-8823	[2]	BEARING
16.	1K-6978	[1]	SCREW
	7H-3937	[1]	LOCKWASHER
17.	3D-8624	[1]	PIN
18.	4D-4971	[2]	SPRING
19.	5D-6366	[1]	LEVER
20.	5D-6382	[1]	ROD
21.	2A-1736	[1]	HANDLE
22.	1D-5117	[1]	NUT
23.	5D-6383	[1]	PIN
24.	0S-1585	[3]	BOLT
25.	0S-1621	[1]	BOLT
26.	6D-8707	[1]	ROD ASSEM.
			(Includes)
	6D-8695	[1]	ROD
27.	1B-4430	[2]	NUT
28.	4D-4065	[2]	ROD END
29.	6D-8346	[1]	LEVER ASSEM.
			(Includes)
	3D-8824	[2]	BEARING

Information:

POWER TRAIN

TRANSMISSION GP

Special Instruction

Conversion Of Two Seal Type Transmission Switches{3171, 3172, 3173}
Conversion Of Two Seal Type Transmission Switches{3171, 3172, 3173}

Procedure to Salvage the Slots for the Pin and Holes for the Reaction Dowel in Transmission Clutch Plates, Pistons, and Housings {3030, 3050, 3169, 3170, 3190}
Procedure to Salvage the Slots for the Pin and Holes for the Reaction Dowel in Transmission Clutch Plates, Pistons, and Housings {3030, 3050, 3169, 3170, 3190}

Service Letter-NACD

Certain 9U8233 Bearings Need To Be Removed From Parts Stock
Certain 9U8233 Bearings Need To Be Removed From Parts Stock

Service Letter-Australia

Service Letter-CFEL

Service Letter-CSARL

Service Letter-Americas

Service Letter-Brazil

Technical Information Bulletin

Some 2P-4472, 7G-0825, and 8P-1656 Clutch Plates May Have Been Shipped Into the Parts System Before Finish Grinding
Some 2P-4472, 7G-0825, and 8P-1656 Clutch Plates May Have Been Shipped Into the Parts System Before Finish Grinding

Specifications

Valve For Transmission Hold And Differential Lock (6D856)
637 TRACTOR-SCRAPER AIR SYSTEM AND BRAKES

Pedal Adjustments For Transmission Hold And Differential Lock
637 TRACTOR-SCRAPER AIR SYSTEM AND BRAKES

Oil Filter For The Transmission (2S6457)
627 & 637 SCRAPERS POWER TRAIN

Oil Pump For The Transmission (7S2983)
627 & 637 SCRAPERS POWER TRAIN

Transmission
627 & 637 SCRAPERS POWER TRAIN

Hydraulic Control Pressures
627 & 637 SCRAPERS POWER TRAIN

Oil Pump For the Transmission (7S4577)
631, 633 & 637 TRACTORS POWER TRAIN

Oil Filter For The Transmission (2S6457)
631, 633 & 637 TRACTORS POWER TRAIN

Scavenge Pump For The Transfer Gear Of The Transmission (7S4578 or 1P4220)
631, 633 & 637 TRACTORS POWER TRAIN

Transmission
631, 633 & 637 TRACTORS POWER TRAIN

Transfer Gears For The Transmission (7S2940)
631, 633 & 637 TRACTORS POWER TRAIN

Drive Gears For Torque Converter Pump Or Transmission Scavenge Pump (1M9702 Drive Gear with 9S4050 or 1P13 Idler Gear)
5.4" BORE SIX CYLINDER VEHICLE ENGINE(WITH CYLINDER BLOCK SP

Tool Operating Manual

M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}
M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}

Service Letter-China

Certain 9U8233 Bearings Need To Be Removed From Parts Stock
Certain 9U8233 Bearings Need To Be Removed From Parts Stock

Service Letter-Asia

Reuse And Salvage Guidelines

Procedure to Salvage the Slots for the Pin and Holes for the Reaction Dowel in Transmission Clutch Plates, Pistons, and Housings {3030, 3050, 3169, 3170, 3190}
Procedure to Salvage the Slots for the Pin and Holes for the Reaction Dowel in Transmission Clutch Plates, Pistons, and Housings {3030, 3050, 3169, 3170, 3190}

Reusability of Drive Train Gears {3002, 3159, 3256, 4055}
Reusability of Drive Train Gears {3002, 3159, 3256, 4055}

Transmission, Torque Converter and Relief Valve Bench Test Procedures Reference Manual Contents {3030, 3101, 3133}
Transmission, Torque Converter and Relief Valve Bench Test Procedures Reference Manual Contents {3030, 3101, 3133}

Identification of Non-Metallic Discs that are Used in Power Shift Transmissions {3030, 3155}
Identification of Non-Metallic Discs that are Used in Power Shift Transmissions {3030, 3155}

Transmission Clutch Plates and Disc Assemblies with Sintered Bronze Friction Material {3030, 3155, 3190}
Transmission Clutch Plates and Disc Assemblies with Sintered Bronze Friction Material {3030, 3155, 3190}

Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}
Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}

Identification and Applications of Transmission Clutch Plates and Specifications to Machine Reaction Faces for Power Shift Transmissions {3054, 3155, 3160, 3190}
Identification and Applications of Transmission Clutch Plates and Specifications to Machine Reaction Faces for Power Shift Transmissions {3054, 3155, 3160, 3190}

Transmission Reuse and Salvage Manual Contents {0374, 3030}
Transmission Reuse and Salvage Manual Contents {0374, 3030}

Transmission Governor Salvage for Seven and Eight Speed Powershift Transmissions {3151}
Transmission Governor Salvage for Seven and Eight Speed Powershift Transmissions {3151}

Clutch Ring Gears For All Power Shift Transmissions {3030, 3155}
Clutch Ring Gears For All Power Shift Transmissions {3030, 3155}

Procedure to Salvage Tang Slots on Transmission and Brake Pistons {0679, 3160, 4011, 4251}
Procedure to Salvage Tang Slots on Transmission and Brake Pistons {0679, 3160, 4011, 4251}

Repair of Transmission, Torque Converter, and Torque Divider Shafts {3000, 3063, 3100}
Repair of Transmission, Torque Converter, and Torque Divider Shafts {3000, 3063, 3100}

Reusability Inspection of Seal Ring and Stator Carrier Assemblies for Certain Models {0760, 0761, 3101, 3129, 3160, 7555}
Reusability Inspection of Seal Ring and Stator Carrier Assemblies for Certain Models {0760, 0761, 3101, 3129, 3160, 7555}

Reuse and Salvage of Transmission Components {3030}
Reuse and Salvage of Transmission Components {3030}

Procedure to Machine Damaged Transmission and Differential Yokes {3030, 3253, 3258}
Procedure to Machine Damaged Transmission and Differential Yokes {3030, 3253, 3258}

Procedures to Salvage Thrust Faces on Planetary Carriers {3160, 4050, 4051, 4093}
Procedures to Salvage Thrust Faces on Planetary Carriers {3160, 4050, 4051, 4093}

Repair of Reaction Dowel Holes in Transmission Clutch Housings {3030, 3155, 3169}
Repair of Reaction Dowel Holes in Transmission Clutch Housings {3030, 3155, 3169}

Thermal Spray Procedures for Clutch Housing Piston Bore {0679, 3160, 3169}
Thermal Spray Procedures for Clutch Housing Piston Bore {0679, 3160, 3169}

Thermal Spray Procedures for Clutch Piston Inside Diameter {0679, 3160, 3170}
Thermal Spray Procedures for Clutch Piston Inside Diameter {0679, 3160, 3170}

Thermal Spray Procedures for Transmission, Torque Converter and Torque Divider Shafts {0679, 0719, 3030, 3101, 3125, 3130}
Thermal Spray Procedures for Transmission, Torque Converter and Torque Divider Shafts {0679, 0719, 3030, 3101, 3125, 3130}

Thermal Spray Procedures for Transmission and Torque Converter Yokes {0599, 0679, 3001, 3030, 3101, 3160}
Thermal Spray Procedures for Transmission and Torque Converter Yokes {0599, 0679, 3001, 3030, 3101, 3160}

Contamination Control Guidelines

Proper Oil Changing Procedures {1000, 1308, 1316, 1325, 1348, 3000, 3004, 3005, 3030, 3064, 3067, 3080, 3081, 4000, 4001, 4050, 4051, 5050, 5056, 5068, 5095}
Proper Oil Changing Procedures {1000, 1308, 1316, 1325, 1348, 3000, 3004, 3005, 3030, 3064, 3067, 3080, 3081, 4000, 4001, 4050, 4051, 5050, 5056, 5068, 5095}

Obtaining Oil Sample for Analysis {1302, 1348, 3030, 3080, 3278, 4011, 4070, 5050, 5056, 5095, 7542}
Obtaining Oil Sample for Analysis {1302, 1348, 3030, 3080, 3278, 4011, 4070, 5050, 5056, 5095, 7542}

Service Letter-APD

Certain 9U8233 Bearings Need To Be Removed From Parts Stock
Certain 9U8233 Bearings Need To Be Removed From Parts Stock

Testing and Adjusting

Testing And Adjusting
627:50K1,69M1; 637:64M1,91N1,92N1 POWER SHIFT TRANSMISSION

Testing And Adjusting
637 POWER SHIFT TRANSMISSION

Bench Test Procedures

Transmission, Torque Converter and Relief Valve Bench Test Procedures Reference Manual Contents {3030, 3101, 3133}
Transmission, Torque Converter and Relief Valve Bench Test Procedures Reference Manual Contents {3030, 3101, 3133}

Disassembly and Assembly

Power Pack
637 SCRAPER ENGINE

Transmission
637 SCRAPER POWER TRAIN

Transmission Oil Cooler
ENGINE FOR 631-633-637 TRACTORS

Transmission
631-633-637 TRACTOR POWER TRAIN

Service Magazine

Caution: Transmission Control Systems With Electronic Switching Can Be Damaged By Wrong Use Of 1P3550 Or 5P6590 Wiring Harness Tester Groups{0651,3168,1408}
1980/12/01

Procedure To Move Tandem-Powered Tractor-Scrapers Long Distances{0374,0375,4051,4053,3150,3259}
1981/05/04

Instrument Panel Guards Prevent Vandalism (Damage) To Machines{7315}
1982/09/20

Fixture For Disassembly And Assembly Of Center Shaft In Seven And Eight Speed Transmissions{0620,3150}
1977/01/17

Correction To Service Manual Information For Adjustment Of Shift Points On Eight-Speed Semi-Automatic Transmissions{3167,0374}
1977/02/28

New Engine Mount Keeps Forces Caused From Engine Side-To-Side Movement Away From The Frame Of The Vehicle{1152}
1977/03/21

Improved 5P3000 Engine And Transmission Shipping Stand Assembly; Modification Available For Stands Already In Use{0640}
1977/04/25

Operating Techniques Guide Now Available For Wheel Tractor Scrapers With Eight Speed Transmission{0374,3150}
1977/06/20

Some Cracks In 8S5 Carrier Assembly In Planetary Transmission Group Are Acceptable{3150}
1979/01/15

Transmission Clutch No. 6 Has New Housing; Retaining Bolts For Clutch Housing Now Have Dampers {3155,3169}
1989/09/04

Coasting While In Neutral May Cause Severe Transmission Damage{3150,3061,3186}
1989/09/25

Extension Cable Makes It Easier To Use ICM Transmission Control Monitor {3168,0600,1408}
1989/10/09

New Transmission/Retarder Oil Cooler Core Group; Modification To Install Temperature Sensor{1375,1368}
1991/11/11

Spanner Wrench is Available for Ecology Drain Valves {1302, 1353, 1372, 5076, 5613}
2006/03/20

Improved Registration Process for Retrofit Products {1000, 3000, 7000, 7570}
2011/02/17

Cat® Reman Announces the Addition of Transmission Clutch Plates for Certain Machine Transmissions {3160}
Cat® Reman Announces the Addition of Transmission Clutch Plates for Certain Machine Transmissions {3160}

A New Bearing Cage Assembly is Now Used in the Planetary Group on Certain Wheel Tractor-Scrapers and Off-Highway Trucks {3030, 3160}
A New Bearing Cage Assembly is Now Used in the Planetary Group on Certain Wheel Tractor-Scrapers and Off-Highway Trucks {3030, 3160}

Caterpillar Parts SIS Catalog 637 :

Truck sale:

USD $14,950

CAT 637

Rud Construction, Inc.
Webster, Minnesota

CATERPILLAR 637 1996
- WHEEL TRACTOR SCRAPERS
MACALLISTER MACHINERY
United States

USD $393,000

2003 CAT 637

High Country Motors
Granby, Colorado